Bio-based aromatic polyesters from a novel bicyclic diol derived from D-mannitol
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hdl:2117/16780
Tipus de documentArticle
Data publicació2012-10-23
EditorAmerican Chemical Society (ACS)
Condicions d'accésAccés obert
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Abstract
2,4:3,5-Di-O-methylene-D-mannitol, abbreviated as
Manx, is a D-mannitol-derived compound with the secondary hydroxyl
groups acetalized with formaldehyde. The bicyclic structure of Manx
consists of two fused 1,3-dioxane rings, with two primary hydroxyl
groups standing free for reaction. A homopolyester made of Manx and
dimethyl terephthalate as well as a set of copolyesters of poly(butylene
terephthalate) (PBT) in which 1,4-butanediol was replaced by Manx up
to 50% were synthesized and characterized. The polyesters had Mw in
the 30 000−52 000 g mol−1 range and a random microstructure and
were thermally stable up to nearly 370 °C. They displayed outstanding
high Tg with values from 55 to 137 °C which steadily increased with the
content in Manx. Copolyesters containing up to 40% of Manx were
semicrystalline and adopted the crystal structure of PBT. Their stress−
strain parameters were sensitively affected by the presence of
carbohydrate-based units with elongation at break decreasing but tensile strength and elastic moduli steadily increasing with
the degree of replacement.
CitacióLavilla, C. [et al.]. Bio-based aromatic polyesters from a novel bicyclic diol derived from D-mannitol. "Macromolecules", 23 Octubre 2012, vol. 45, núm. 20, p. 8257-8266.
ISSN0024-9297
Versió de l'editorhttp://pubs.acs.org/doi/pdf/10.1021/ma3013288
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